private static ModelItem GetLastChild(ModelItem modelItem, ViewService viewService)
{
ModelItem modelItem1 = modelItem;
bool flag = false;
while (modelItem != null && modelItem.Content != (ModelProperty)null && !flag)
{
if (modelItem.Content.IsCollection)
{
if (modelItem.Content.Collection.Count > 0)
{
modelItem = modelItem.Content.Collection[modelItem.Content.Collection.Count - 1];
}
else
{
flag = true;
}
}
else if (modelItem.Content.IsSet)
{
modelItem = modelItem.Content.Value;
}
else
{
flag = true;
}
if (modelItem != null && SelectionImplementation.IsSelectable(modelItem) && modelItem.View != (ViewItem)null)
{
modelItem1 = modelItem;
}
}
return(modelItem1);
}
internal static Selection SelectParent(EditingContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
ModelService requiredService = context.Services.GetRequiredService <ModelService>();
Selection s = context.Items.GetValue <Selection>();
Selection selection = new Selection();
ModelItem primarySelection = s.PrimarySelection;
if (SelectionImplementation.AreSiblings(s))
{
selection = new Selection(new ModelItem[1]
{
primarySelection.Parent
});
}
if (selection.PrimarySelection == null)
{
selection = new Selection(new ModelItem[1]
{
requiredService.Root
});
}
context.Items.SetValue((ContextItem)selection);
return(selection);
}
private static ModelItem GetFirstChild(ModelItem modelItem, ViewService viewService)
{
ModelProperty content = modelItem.Content;
if (content == (ModelProperty)null)
{
return((ModelItem)null);
}
ModelItem modelItem1 = (ModelItem)null;
if (content.IsCollection)
{
if (content.Collection.Count == 0)
{
return((ModelItem)null);
}
modelItem1 = content.Collection[0];
}
else if (content.IsSet)
{
modelItem1 = content.Value;
}
if (modelItem1 == null || !SelectionImplementation.IsSelectable(modelItem1) || modelItem1.View == (ViewItem)null)
{
return((ModelItem)null);
}
return(modelItem1);
}
internal static void SelectPrevious(EditingContext context)
{
Selection s = context.Items.GetValue <Selection>();
if (SelectionImplementation.IsMultiSelection(s))
{
SelectionImplementation.SelectParent(context);
}
else
{
if (s.PrimarySelection == null)
{
return;
}
ModelItem primarySelection = s.PrimarySelection;
ViewService service = context.Services.GetService <ViewService>();
ModelItem previousSibling = SelectionImplementation.GetPreviousSibling(primarySelection, service);
ModelItem modelItem = previousSibling != null?SelectionImplementation.GetLastChild(previousSibling, service) : (primarySelection.Parent != null ? primarySelection.Parent : SelectionImplementation.GetLastChild(primarySelection, service));
if (modelItem == null)
{
return;
}
context.Items.SetValue((ContextItem) new Selection(new ModelItem[1]
{
modelItem
}));
}
}
internal static void SelectNext(EditingContext context)
{
Selection s = context.Items.GetValue <Selection>();
if (SelectionImplementation.IsMultiSelection(s))
{
SelectionImplementation.SelectParent(context);
}
else
{
if (s.PrimarySelection == null)
{
return;
}
ModelItem modelItem1 = s.PrimarySelection;
ViewService service = context.Services.GetService <ViewService>();
ModelItem modelItem2;
for (modelItem2 = SelectionImplementation.GetFirstChild(s.PrimarySelection, service); modelItem2 == null && modelItem1.Parent != null; modelItem1 = modelItem1.Parent)
{
modelItem2 = SelectionImplementation.GetNextSibling(modelItem1, service);
}
if (modelItem2 == null)
{
modelItem2 = modelItem1;
}
if (modelItem2 == null)
{
return;
}
context.Items.SetValue((ContextItem) new Selection(new ModelItem[1]
{
modelItem2
}));
}
}
private static Selection SelectContent(ModelItem parent)
{
Selection selection = new Selection();
if (parent.Content.IsCollection)
{
selection = new Selection((IEnumerable)parent.Content.Collection);
}
else if (parent.Content.IsDictionary)
{
selection = new Selection((IEnumerable)parent.Content.Dictionary);
}
else if (parent.Content.IsSet && SelectionImplementation.IsSelectable(parent) && SelectionImplementation.IsSelectable(parent.Content.Value))
{
selection = new Selection(new ModelItem[1]
{
parent.Content.Value
});
}
return(selection);
}
